Air delivery device



June 8, 1937. J. H. HARDY AIR DELIVERY DVICE original Filed Dec. 15, 1955 l Ammm l Aum" Patented June s, 1937 t 2,082,886

AIR DELIVERY DEVICE James Harris Hardy, Columbus, Miss., assigner toV Precision Air Gauge Company, Columbus, Miss., a corporation of Mississippi Original application December 13, 1933, Serial No. 702,239. Bivided and this application July 2, i936, Serial No. 88,691

6 Ciaims. (Cl. 277-,42)

This invention relates to an improvement in said openings, so as to allow the ow of fluid air delivery devices, such as may be employed therethrough -around the stem.

for the inflation of pneumatic tires, and more A rubber or resilient valve seat i3 is mounted particularly to a double-chuck for a tire iniating in the chamber l in position to receive a high pres- 5 hose or gas mixing supply device. sure valve ifi having its valve stem i4' projecting 5 The principal object of the present invention in opposite directions, one portion being received is to provide for the mixing of different gases in the opening 'i and the other portion being or air under different pressures in adouble chuck received in an opening S5 in a plug IS which or supply device by making provision for autoseals the outer side of the chamber li. A spring ll l matic connection of the different gases or air is mounted in the opening l5 and bears against 19 under diierent pressures according to the posithe valve It normally tending to hold it on its tion of the supply device. seat.

A further object of the invention is to provide The head 2 has a high pressure passageway I8 a nozzle for inating a pneumatic tire capable therethrough and a low pressure passageway I9, if; of delivering high or low pressure to the tire, at the latter being controlled by a check-valve Z. the will of the operator. The nozzle is adapted to The casing l has a chamber 2l therein having be connected with a source of high pressure, p a duct 22 extending therefrom to an air passageand under the control of the operator, this high way 23 in its outer end which communicates with pressure may be connected directly with the tire the low pressure passageway I9. An Opening 24 .10 for speedy inflation thereof. A source of low irl the Casing l beside the passageway 22 has 2 2O pressure may be connected with the nozzle, so as Stem 25 fitted therein and Carrying e tube 25 00mto be used to iniiate the tire, as for instance, muhethg With the bore 2 0f the Stem 25 and when the tire is inflated to almost normal prese150 With the passageway I8 0f the high pressure Sura The 19W pressure connection may be valve. The bore 2l has communication there- I," through the pressure gauge, if desired O1. direct through in one direction controlled by a check- 25 with a Source of 10W pressurevalve 28, normally held against its seat by a The invention is illustrated in different em- Srmgzg An Otle 3a .tflrough Oneeslde gf the s ern communica es w1 a passag way eX- bodlments m the accompanying drawmg m tending through the casing l to be connected which:

with a high pressure pipe 32. d F115' l iltsla Slgtleafltelgofonascnfiery The stem 25 has the `.inner end portion thereof ev e W a' p slotted to receive a T-shaped member 34, a por- Fig. 2 is a partial sectional view and diagramtion of which projects into the bore 21 in pos man@ VIEW of a .dlfferent form of douwe Chuck tion to engage the ball check-valve 28 to unseat g as used on 91 ulfi Supply hose* the `same against the tension of the spring 29. 35

A S Shown m F'lg l the assembly @f mprlses a The member 34 may be operated in any suitable Cas/mg l. 0f a Size and Shape that 1t may be manner, such, for instance, as by a bellows argrpped 111 the hand 0f 'an Operator @nd has a rangement controlled by the pressure in the head 2 of a nozzle connected therewith, as by Chamber 2g, as Set fori-,h in my former applica- Screw-threads 3, the Connection beine tightly uen, serial No. 702,239, nieu December 13, 1933, 40 packed, S0 eS t0 prevent the @Scarpe 0f air there' on Air delivery device, in which case the member through 3d will unseat the valve to establish communica- The head 0f the 110221@ has high and 10W tion between the chamber 2l and the passagepressure Chambers fr and 5 therein, separated by way 3l whenever the pressure in the chamber 2| is is a wall 6 having an Opening l therethrough. The lowered by the opening of the low pressure valve 45 chamber 5 is partly closed at its lower side by ll. means of a cap 3, Drei/ide@ With e eehtrel Operl- Whenever the head 2 is pressed on the stem of ing 9 therethrough, of a size and shape adapted the tire to inflate the same, the pressure in the to receive the upper end of the valve stem of a chamber 2l will be lowered to that extent so pneumatic tire The Cep 3 SllDpOrtS e Valve Seat that the member 34 will be moved forward to 50 le on its upper side which is preferably of rubber unseat the valve 28, allowing high pressure from and against which seats a low pressure valve ll the passageway 3l to ilow into the chamber 2| having a stem i2, projecting in opposite direcand past the valve Il into the tire. tions from said valve and being guided by the If the tire pressure should still be below the Openings 'l and 9, but being of smaller size than set point desired by the operator, the oper-ation 55 would be repeated, delivering another volume of pressure to the tire, and this continues until the tire pressure is raised to a predetermined amount.

If the operator presses strongly on the head 2, the valve stem which normally unseats the valve Il by engagement with the stem l2 would cause movement of the stem l2 suiiciently to engage the lower end of 'the stem I4' to unseat the valve I4 allowing the high pressure from the passageway 3| to be communicated through the opening 2l, the tube 26 and the passageway I8, 'and through the opening 1, directly to the valve. This may be used when the pressure of the tire is greatly below the desired pressure or when it contains very little or no pressure, and then when the pressure rises approximately to normal, the operator may lift the head slightly suiciently to allow the valve lll to close and thereafter the pressure will be applied through the gauge as above described.

In Fig. 2, I have shown the head `as being connected with a double hose for high and low pressure extending directly to separate sources of supply instead of through .the gauge.

The construction of .the nozzle is the same as shown in Fig. l, as ydescribed abo-ve, but the head has tubes 54 and v55 attached to one side thereof communicating respectively with the passageways 18a-nd i9, .and having a hose 56 connected therewith with openings and 58 communicating with the tubes '54 and .55, respectively.

If desired, two separate hoses may be used instead of 'the single double hose 56. The openings 51 and '58 are adapted to be connected with separate sources 59 and 6u, vof high and low pressure, respectively, so that when light pressure is applied t'o the nozzle by the operator, the low pressure is connected with the stem of the tire, whereas when heavy pressure is applied by the operator both valves are unseated and the high pressure is connected to the tire.

The source of supply of containers 59 and '6D maybe used to contain cli-Herent gases, if desired, which will be mixed in passing through the head upon the opening of 'both valves therein.

This application is a division of my former application on Air vdelivery device, Serial No. 702,239, -led December 13, 1933, and now Patent No. 12,049,392, granted July 28, 1936.

I claim:

-1. In Aan air delivery device, the combination of a head having high 4and low pressure valves disconnected for relative movement mounted therein in series, said valves being constructed a-nd arranged for seating movement in the same direction, means for connecting a fluid source with one -of said valves, and means for connecting a separate iiuid source with the other of said valves.

2. In an air delivery device, the combination of a head having high and low pressure valves mounted therein in series for cooperative action and opening movements successively, said valves being constructed and arranged for seating movement in the same direction, means for connecting a iiuid source with one of said valves, and means for connecting a separate fluid source under a different pressure from the rst fluid source with the other of said valves.

3. In an air delivery device, the combination of a head having high and low pressure valves disconnected for relative movement mounted therein in series, said Valves being constructed and arranged for .seating movement in the same direction, means for connecting a source of high pressure with the high pressure valve, and means for connecting a source of low pressure with the .low pressure valve.

4. In an air delivery device, the combination of a head having high and low pressure chamlbers therein, and valves arranged in series and relatively movable and 'seating in the same direction for controlling the rdischarge from said chambers, the low pressure valve being arranged to open the high pressure valve upon excess movement.

5. In an air delivery device, the combination of -a head having high and low pressure chambers therein, valves arranged in series and relatively movable and seating in the same direction for controlling the discharge from `said chambers, the low pressure valve being arranged to `open the high pressure valve upon .excess movement, means for connecting a source of high pressure with the high .pressure chamber, and means for connecting .a source of low pressure with the low pressure chamber.

6. An air 'delivery device comprising a head having separate chambers therein With an integral partition between said chambers, said partition having an opening therein for establishing communica-tion bet-Ween the chambers, valves mounted in said chambers, one of which valves being arranged to control communication between the chambers yand the other of said valves being arranged to control discharge from the chambers, said Valves being arranged for series actuation upon the opening of the last-mentioned valve to a substantial extent, and a plug removably inserted into the top .portion of the head for closing one of said chambers and being removable to permit withdrawal of the valve mounted therein;

JAMES HARRIS HARDY. 

